package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
//单字节读写
public class CopyDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("000.jpg");
        FileOutputStream fos=new FileOutputStream("001.jpg");
        int d;
        long start=System.currentTimeMillis();//获取当前时间的毫秒值
        while ((d=fis.read())!=-1){
            fos.write(d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕，耗时"+(end-start)+"ms");
        fis.close();
        fos.close();
    }
}
